Infundibulum (heart)

Infundibulum
Sternocostal surface of heart. (Infundibulum (Conus arteriosus) visible at top center.)
Details
Identifiers
Latin	infundibulum
TA98	A12.1.02.008
TA2	4041
FMA	7216
Anatomical terminology [edit on Wikidata]

The infundibulum (also known as conus arteriosus) is a conical pouch formed from the upper and left angle of the right ventricle in the chordate heart, from which the pulmonary trunk arises. It develops from the bulbus cordis. Typically, the infundibulum refers to the corresponding internal structure, whereas the conus arteriosus refers to the external structure. Defects in infundibulum development can result in a heart condition known as tetralogy of Fallot.

A tendinous band extends upward from the right atrioventricular fibrous ring and connects the posterior surface of the infundibulum to the aorta. The infundibulum is the entrance from the right ventricle into the pulmonary artery and pulmonary trunk. The wall of the infundibulum is smooth.

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  Front view of human heart and lungs.

This article incorporates text in the public domain from page 531 of the 20th edition of Gray's Anatomy (1918)

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